GCC 4.8.3 is being released, adjusting target milestone.
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https://bugs.launchpad.net/bugs/1295738
Title:
[4.8 Regression] unable to find a register to spill in class 'LO_REGS'
Status in The GNU Compiler Collection:
New
Status in Linaro GCC:
Triaged
Status in gcc-4.8 package in Ubuntu:
New
Bug description:
seen with the 4.8 branch on arm-linux-gnueabihf, configured with
--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb
omitting the -fno-tree-dce works around the issue. not seen with the
4.7 branch and trunk 20140306.
$ g++ -std=c++11 -fPIC -fno-tree-dce -fno-exceptions -fno-omit-frame-pointer
-c -g -O2 JITArithmetic32_64.ii
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp: In member function 'void
JSC::JIT::emit_op_add(JSC::Instruction*)':
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:526:1: error: unable to
find a register to spill in class 'LO_REGS'
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:526:1: error: this is the
insn:
(insn 335 334 336 20 (parallel [
(set (reg:SI 3 r3)
(ior:SI (eq:SI (reg/v:SI 112 [ op ])
(reg/v:SI 110 [ dst ]))
(eq:SI (reg/v:SI 111 [ op ])
(reg/v:SI 110 [ dst ]))))
(clobber (reg:CC 100 cc))
]) ../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:514 295
{*ior_scc_scc}
(expr_list:REG_UNUSED (reg:CC 100 cc)
(nil)))
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:526: confused by earlier
errors, bailing out
Preprocessed source stored into /tmp/ccb0Osgc.out file, please attach this to
your bugreport.
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